Extension-box-cover machine



Feb. 23 926. 1,573,906

C. D. BLAKE SAWMILL HEAD BLOCK CLEANER Filed Sept. 28, 1923 PatentedFeb. 23, 1926.

PATENT orFicE.

HENRY BLUG-ERMAN, OF TORONTO, ONTARIO, CANADA.

EXTENSION-BOX-COV ER MACHINE.

Application filed October To all who n2, 2'2? may concern:

Be it known that I, HENRY BLUGERMAN, a subject of the King of GreatBritain, and resident of the city of Toronto, county of York, Provinceof Ontario, in the Dominion of Canada, have invented certain new anduseful Improvements in Extension-Box- Cover Machines, as described inthe following specification and illustrated in the accompanyingdrawings, that form part of the same.

The principal objects of the invention are to facilitate the work ofassembling paper boxes having flanged or extension edges and to increasethe production and reduce the cost of manufacture to a minimum.

The principal features of the invention consist in the arrangement ofadjustable stops upon a table adapted tohold the extension portion'ofthe cover in position while the rim portion is centrally attachedthereto.

In the drawings, Figure l is a side elevational view of a portion of apress showing the press ram and holding plate positioned to receive thework.

Figure 2 is a perspective view of the holding plate, and Fig. 3 is anelevational view of a cover assembled.

Figure 4 is a perspective view of the two portions of the cover arrangedin a superposed position prior to being joined together.

In the present method of manufacturing certain classes of paper boxes,such as a confectionery box with an extension top and bottom, the coverand body portions are first stamped out in die presses and then formedin a forming machine and the corners are secured with glued strips, asshown in the'upper portion of the illustration in Figure 3.

A portion of the surface of a rectangular piece of paper board ofgreater area than the bottom surface of the formed cover or bodyportion, is partly covered with an ad hesive and the formed portion isthen placed upon the adhesively coated portion in a centralizedposition. U

This hand method of placing the formed portion on'the enlarged sheet ofpaper board is very unsatisfactory, as it is very difficult to properlyposition the body portion on the larger paper board to leave therequired even margin around the body portion. It is very necessary thatthese two portions be centered with precision owing to the fact that the8, 1925. Serial No. 61,233.

paper covering for the two portions of the box are stamped out to exactdimensions to cover the portions and if any unevenness occurs the papercover will overlap on one side and will not meet on the other,presenting a very unsightly box when finished.

To overcome this undesirable condition I provide the lower end of theplunger 1 of the press 2 with a rectangular box-former 3 of dimensionsslightly greater than the inside dimensions of the box body portion 4.ldjustably connected to the upper end of the central support 5 of thepress is a rectangular plate 6 provided with a pair of parallel slots 7arranged in central relation to one dial'neter of said plate and pairsof parallel slots 8 arranged in central relation to the other diameterand at each side of the slots 7.

Guide brackets 9 having upright ends are adjustably secured to the plateby bolts extending into the slots 7 and 8, said bolts having wing nuts10. The upper ends 11 of the brackets 9 are bevelled inwardly to guidethe enlarged sheet 12 into place.

Suitable graduation marks are stamped in the surface of the plate 6either side of the slots 7 and 8, and are preferably arranged to extendfrom the centre line of the plate and are spaced apart in half inchspacing and numbered consecutively 1, 2, 8, 4:, etc., which representinch total lengths of cover, this greatly facilitating the accuratesetting of the brackets.

hen it is desired to make a box with the top and bottom projectingbeyond the body portions the rectangular block 3 of proper dimensions isproperly centered and securely fastened to the lower end of the plungerbar 1 and the brackets 9 are adjusted in the slots 7 and 8 to thegraduations which will give the required area for accommodating therectangular sheet 12 and locate it in central relation to the block. Theoperator then places a previously gunnned rectangular sheet 12 betweenthe brackets and at the same time places a cover or body portion on. theblock 3.

The press is then operated and the block 3 descends and places the bodyportion centrally on the gummed sheet 12 and presses the two portionssecurely together.

The plate 6 is supported on a spring ram 13 so that there is a flexiblecontact between the block and sheet and when the plunger 1. Animprovement in saw mill head block cleaners comprising a conventionalbase plate, and a work tteeding knee slid? able along the upper face 01the base plate;

said improvement consisting 01" forming a transverse diagonal groove inthe base plate said groove extending entirely across the upper face ofthe base plate, a scraper plate lying" in. said groove and twistedlaterally at its upper end to extend diagonally across.;and in contactwith the adacent iace ot said knee, and means ad justably and removablysecuring said plate in the groove.

2. A cleaner attachment for a conventional saw-mill head block, saidattachment comprising a plate provided with longitudinally'spacedelongated slots, the lower portion ofsaidplate being relatively long andflatto provide an attaching portion to be connected to one flat sideof'said block, the upper end thereof being twisted laterally with its freeupper edge out diagonally whereby to extend diagonally across the top ofsaid block.

In testimony irhereolf I ailix my signature.

)HARLES D. BLAKE.

